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CVE

CVE-2026-68343

smb: client: validate DFS referral PathConsumed
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CVE

CVE-2026-68343

smb: client: validate DFS referral PathConsumed

In the Linux kernel, the following vulnerability has been resolved:

smb: client: validate DFS referral PathConsumed

parsedfsreferrals() validates that the response contains the fixed

referral entry array and, on for-next, the per-referral string offsets.

However, the response also contains a PathConsumed value that is later

used for DFS path parsing.

If a malformed response provides a PathConsumed value larger than the

search name, later DFS parsing can advance beyond the end of the path.

Validate PathConsumed against the search name length before storing it in

the parsed referral.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.1
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
C
H
U
-

Related Resources

No items found.

References

https://git.kernel.org/stable/c/285bd4a5f3f156aa5869843b47a1b1380b774241, https://git.kernel.org/stable/c/2fdd6d196c656b376cc251e1e9ff110b3ed522e1, https://git.kernel.org/stable/c/5b439f39f33ec15d319ced3b025e122346fba987, https://git.kernel.org/stable/c/9f88a99ed511651b2dc2177d6854b2d1b8322e75, https://git.kernel.org/stable/c/bfebe5110fd135d86d65a0a346e14c106b02028b, https://git.kernel.org/stable/c/f6f5ee2aa33b350c671721b965251c42cebb962e, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68343.json, https://nvd.nist.gov/vuln/detail/CVE-2026-68343, https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Severity

9.1

CVSS Score
0
10

Basic Information

Base CVSS
9.1
EPSS Probability
0.00513%
EPSS Percentile
0.41473%
Introduced Version
4ecce920e13ace16a5ba45efe8909946c28fb2ad,4.11.0,6.2.0,6.7.0,6.13.0,6.19.0,0
Fix Available
f6f5ee2aa33b350c671721b965251c42cebb962e,6.1.183,6.6.148,6.12.101,6.18.42,7.1.6,6.12.101-1~deb12u1,6.12.101-1,0:5.14.0-687.41.1.el9_8

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